Washing, fulling, and dyeing of fabrics



. E. MUNDQRF p WASHING,, FULLING, AND PY,EING 9F FABRICS Filed May 6. 1925 In vemar: Em 2'? Wu ndorf I Patented Oct. 26, 1926.

PATENT OFFICE.

EMIL MUNDORF, OF AACHEN, GERMANY.

WASHING, FULLING, AND DYEING OF FABRICS.

Application filed May 6, 1925, Serial No. 28,491, and in Germany May 20,1924.

Hitherto, the washing, fulling and dyeing of ordinary fabrics withrectangularly crossing warp and weft threadsis mainly carried out in theform of ropes in which the fabric lists are open or sewn together. Inthese ropes the warp threads of the fabric extend in the longitudinaldirection and the weft threads in the transverse direction. Thereforethe mechanical action exerted, for instance during the washing of woolenfabrics, on the warp threads is entirely different from that exerted onthe weft threads. The former are held stretched by the load of the ropeand the pressure of the cylinders of the washing and fulling mills sothat they do not shrink at all or only little but often lengthen even,while the Weft threads lose about 10 to per cent of their length. wingto this unequal relaxation of the warp 20 and weft threads the woolenfabrics produced are of mean quality; they will soon be worn out andlose their smooth form and good fit in wearing and mostly are liable tocrumple and diflicult to iron.

These drawbacks are avoided according to the invention by treating thefabric in the form of a tube-like rope which is produced by winding thefabric helically and in which the warp and weft threads extend at an 80acute angle with relation to the direction in which the fabric isdrawn'or moved during the washing, fulling and dyeing.

In treating a fabric rope according to the invention a much betterdegree of finishing 35 will be attained than has hitherto been possible,because the influence of the finishing process on the two systems ofthreads is more uniform. The invention will now be described withreference to the accompanying drawings in which:

Fig. 1 shows a fabric flattened into rope form.

Fig. 2 is a view showing the fabric in folded condition in which it ismaintained during the wet treatment.

"Instead of folding the fabric a; into a rope in the direction of thewarpthreads, it

- is according to the invention wound helical- -ly into a tube-like ropeas shown in Fig. 1.

The lists 6 of the fabric abutting each other and extending along ahelical line are sewn together before the fabric is drawn off theforming structure. The lists I) are indicated in Fig. 1 by thick lines.

Having thus described my invention, what I claim as new and desire tosecure by Let-- tors-Patent, is

1. The herein described method of preparing fabrics for washing,fulling, and dyeing. consisting in winding the fabric helically andsecuring it in such wound condition so as to produce a rope in which thewarp and weft threads extend at an acute angle to the length of therope.

2-. The herein described method of preparing fabrics for washing,fulling and dyeing, which consists in winding the fabric helically withits lists abutting each other to produce a fabric rope in which the warpand weft threads are inclined to the longi- 7 tudinal direction of therope, and securing the abutting lists together.

In testimony whereof I have signed my name to this specification.

EMIL MUN DORF.

